Sargassum biserrula J. Agardh [var. biserrula] forma rudolphianum Grunow, 1915 [1915–1916]: 415 (`rudolphiana') (type locality: Tranquebar, Tamil Nadu, India).—K. Srinivasan, 1965: 242.— K. Srinivasan, 1967: 135–136, fig. 7.— V. Krishnamurthy & H. Joshi, 1970: 13.
INDIAN OCEAN DISTRIBUTION: India.